CN211128745U

CN211128745U - Motor controller

Info

Publication number: CN211128745U
Application number: CN201921848297.1U
Authority: CN
Inventors: 潘家众
Original assignee: Suzhou Inovance Technology Co Ltd
Current assignee: Suzhou Inovance Technology Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-28
Anticipated expiration: 2029-10-30

Abstract

The utility model provides a motor controller, which comprises a shell and a drive board arranged in the shell through a frame, wherein the drive board comprises a cooling fan and a plurality of high-heating components, the space in the shell is divided into a first closed cavity and a second cavity independent of the first cavity, and the second cavity is communicated with the outside through a first windowing and a second windowing on a wallboard of the shell; the heat dissipation fan and the high-heat-generation components are located in the second cavity, and cooling airflow which flows in from the first window and is exhausted from the second window is formed in the second cavity through the heat dissipation fan. The embodiment of the utility model provides a through setting up first cavity and second cavity, prevent when guaranteeing the radiating effect that debris among the operational environment from getting into first cavity, improve the protecting effect, and carry out electronic components's layout design optimization, keep apart high heating components and parts, avoid influencing other electronic components's performance.

Description

Motor controller

Technical Field

The utility model discloses implement and relate to the power electronic equipment field, more specifically say, relate to a motor controller.

Background

The power electronic equipment is equipment using a power electronic device as a main functional element, and along with the innovation and development of scientific and technological technology, the power electronic equipment has increasingly powerful functions and is widely applied to various industries. The motor controller is a common power electronic device, is an integrated circuit which controls the motor to operate according to the direction, speed, angle and response time set by the installation through active operation, and is a core part in a drive control system.

At present, the most adoption forced air cooling's of motor controller on the market mode dispels the heat, so motor controller's internally mounted chamber all can communicate with the outside. However, because electronic components in the existing motor controller are generally integrated and installed in the same cavity, the protection effect of the existing motor controller is relatively poor; during heat dissipation, impurities (such as dust, graphite, cutting fluid and the like) in a working environment easily enter a cavity of the motor controller, so that normal operation and use of electronic components are influenced, aging of the electronic components is accelerated, even the electronic components fail or danger is caused, and potential safety hazards exist.

In addition, because current motor controller is when the heat dissipation, the cooling air current can flow to each spatial position of whole cavity, therefore the cooling air current can shift the heat that high calorific value electronic components and parts produced to other positions to influence other electronic components's performance (for example electronic components on the printed circuit board), and shorten other electronic components's life, especially the electronic components that heat resistance is relatively poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a relatively poor, the easy influenced and shortened components and parts's of electronic components's performance problem of life to above-mentioned current machine controller's protecting effect provides a machine controller.

An embodiment of the present invention provides a motor controller, including a housing and a driving board installed in the housing through a frame, wherein the driving board includes a heat dissipation fan and a plurality of high heat generation components, the space in the housing is divided into a first closed cavity and a second cavity independent of the first cavity, and the second cavity is communicated with the outside through a first window and a second window on a wall plate of the housing; the heat dissipation fan and the high-heat-generation components are located in the second cavity, and cooling airflow which flows in from the first window and is exhausted from the second window is formed in the second cavity through the heat dissipation fan.

Preferably, the motor controller comprises an air duct partition; the second cavity is formed by enclosing the air duct partition plate, the wall plate of the shell and the frame.

Preferably, the high-heat-generation component comprises a bus capacitor and a radiator for radiating heat for the power module; the air duct partition plate comprises a side plate and a bottom plate which are perpendicular to each other, the side plate is perpendicular to the driving plate, and the bottom plate is parallel to the driving plate; the bottom plate is provided with an opening, and the bus capacitor penetrates through the opening to enter the second cavity.

Preferably, the top of the side plate of the air duct partition plate abuts against the wall plate of the housing, a strip-shaped protruding plate perpendicular to the wall plate is arranged at the position where the wall plate of the housing abuts against the side plate, and when the air duct partition plate is mounted on the housing, the side plate of the air duct partition plate abuts against the strip-shaped protruding plate.

Preferably, the bottom surface of the bottom plate of the air duct partition plate is provided with a clamping groove perpendicular to the bottom plate, the frame is provided with a clamping plate corresponding to the clamping groove, and the clamping plate is embedded into the clamping groove when the air duct partition plate is installed on the housing.

Preferably, an outlet is formed in a side plate of the air duct partition plate, and the component in the first cavity is in conductive connection with the component in the second cavity through a cable penetrating through the outlet; and a cover plate is arranged on the shell corresponding to the outlet.

Preferably, the upper surface of the bottom plate of the air duct partition plate is provided with a plurality of ribbed plates which are respectively arranged around each opening, and the lower surface of the bottom plate of the air duct partition plate is provided with a plurality of sleeves which are respectively arranged around the openings.

Preferably, the first window is located on a bottom plate of the housing, and the second window is located on a top plate of the housing.

Preferably, the heat dissipation fan is located inside the first window, and the plurality of high heat generating components are located between the heat dissipation fan and the second window.

Preferably, an edge of the driving board has a plurality of power terminals exposed to the outside of the case through terminal holes on the case with a seal therebetween.

The utility model discloses machine controller has following beneficial effect: by arranging the first cavity and the second cavity independent of the first cavity and forming cooling airflow in the second cavity, namely arranging the heat dissipation air duct in the second cavity, the electronic component arranged in the first cavity can be effectively prevented from being influenced during heat dissipation, impurities in a working environment are prevented from entering the first cavity, the protection effect is improved, and the use and operation of the electronic component are more stable; and moreover, the layout design of the electronic components is optimized by arranging the high-calorific-value components in the second cavity, so that the high-calorific-value components can be isolated while the high-calorific-value components are efficiently cooled, the performance of other electronic components is prevented from being influenced, other electronic components are protected, and the service lives of other electronic components are prolonged.

Drawings

Fig. 1 is a schematic structural diagram illustrating a motor controller according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a motor controller according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a driving plate provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an air duct baffle according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a section of a motor controller according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an internal part of a motor controller according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the motor controller according to the embodiment of the present invention is a structural schematic diagram, and it should be noted that, in order to clearly show the internal structure, some components are omitted in the figure, and the motor controller can be applied to the field of power electronic devices, especially to a motor controller using air-cooled heat dissipation. As shown in fig. 2 and 3, the motor controller in this embodiment includes a housing 1 and a driving board 3 mounted in the housing 1 through a frame 2, and the driving board 3 includes a heat dissipation fan 31 and a plurality of high heat generating components 32. The frame 2 can be integrally made of a heat conducting material through a die casting process, is convenient to process and can assist in heat dissipation (heat transfer), and the heat dissipation effect is improved.

Above-mentioned shell 1 is including the first cavity of confined and the second cavity that is independent of first cavity, and the second cavity is linked together with the outside through first windowing 11 and second windowing 12 on the wallboard 13 of shell 1 (namely whole machine controller only second cavity and outside intercommunication, other parts are sealed), can effectively keep apart first cavity from this, makes first cavity not communicate in external environment, improves the protective effect to components and parts in the first cavity. Certainly, in practical application, a third cavity can be further arranged in the first cavity, so that the third cavity is independent of the second cavity, and the third cavity can be determined according to actual requirements.

Further, the heat dissipation fan 31 and the plurality of high heat generating components 32 are located in the second cavity, and when the heat dissipation fan 31 is driven to operate, a pressure difference can be formed between the inside of the second cavity and the external environment, so that cooling airflow flowing in from the first window 11 and discharged from the second window 12 is formed in the second cavity, that is, the heat dissipation air duct of the motor controller is formed by the first window 11, the second cavity and the second window 12, and air-cooled heat dissipation of the inside of the motor controller is achieved.

Moreover, since the plurality of high heat generating components 32 are located in the second cavity, the cooling airflow in the second cavity can be used for directly transferring heat on the high heat generating components 32, so that the plurality of high heat generating components 32 can be efficiently cooled, and the heat dissipation effect can be ensured. In practical application, the plurality of high heat generating components 32 (specifically, the conductive connecting portion of the high heat generating components 32) may be assembled to the first cavity, and then the main body portions of the plurality of high heat generating components 32 are inserted into the second cavity through the wall plates of the first cavity and the second cavity, so that air-cooling heat dissipation of the main body portions of the high heat generating components 32 is realized.

The motor controller is provided with the first cavity and the second cavity independent of the first cavity, the first window 11, the second cavity and the second window 12 form a heat dissipation air duct, and cooling air flow is formed in the heat dissipation air duct by means of the heat dissipation fan 31, so that sundries (such as dust, graphite, cutting fluid and the like) in a working environment can be effectively prevented from entering the first cavity (the printed circuit board is prevented from being corroded by the sundries) while actual air cooling heat dissipation is realized, electronic components mounted in the first cavity cannot be influenced, the protection effect on the electronic components is improved, and the use and operation of the electronic components are more stable.

In addition, above-mentioned machine controller effectively carries out electronic components's overall arrangement design optimization through locating high calorific capacity components and parts 32 in the second cavity, not only can guarantee to carry out high-efficient heat dissipation to high calorific capacity components and parts 32, still can keep apart high calorific capacity components and parts 32 simultaneously, avoids influencing other electronic components's performance, protects other electronic components and parts and prolongs other electronic components's life.

Specifically, the motor controller is further provided with an air duct partition plate 4, the air duct partition plate 4 is mainly used for partitioning a first cavity and a second cavity in the motor controller, and the second cavity is formed by the air duct partition plate 4, the frame 2 and a wall plate 13 of the shell 1 in a surrounding mode. Through the wallboard 13 of frame 2 and shell 1, need not extra auxiliary structure, can make overall structure simple more reasonable, improve the utilization ratio of inner space, simplify the structural design of wind channel baffle 4 simultaneously, convenient equipment.

As shown in fig. 4, the high heat-generating component 32 includes a bus capacitor 321 and a heat sink 323 for dissipating heat of the power module 322 (the power module 322 is specifically mounted on the driving board 3), and the heat sink 323 is specifically mountable in the second cavity, so that cooling airflow formed in the second cavity directly dissipates heat of the heat sink 323, and the heat dissipation effect is improved. In a specific application, the driving board 3 may further include a cement resistor, an absorption capacitor, and the like, and the cement resistor, the absorption capacitor, and the like may be distributed in the same region (for example, the lower side of fig. 3) of the driving board 3 as the power module 322, and the heat is uniformly dissipated by the heat sink 323.

In assembly, the driving plate 3 may be mounted on the lower surface of the frame 2 (the frame 2 may specifically include a vertical plate and a horizontal plate, and the driving plate 3 is mounted below the horizontal plate), that is, the driving plate 3 is mounted in the first cavity, thereby separating the driving plate 3 from the second cavity. Then, the upper surface of the power module 322 on the drive board 3 is attached to the bottom surface of the frame 2, the substrate of the heat sink 323 is attached and fixed to the upper surface of the frame 2, and the heat generated by the power module 322 is transferred to the heat sink 323 by the heat conductivity of the frame 2 to be radiated and cooled. Certainly, in practical application, the frame 2 may also be provided with a avoiding window, so that the power module 322 passes through the avoiding window, and at this time, the heat radiator 323 can directly transfer heat on the power module 322, thereby improving the heat radiation effect.

Further, above-mentioned wind channel baffle 4 includes mutually perpendicular's curb plate 41 and bottom plate 42, and accomplishes the back at wind channel baffle 4 assembly, curb plate 41 perpendicular to drive plate 3, and bottom plate 42 is on a parallel with drive plate 3 to can improve overall structure's rationality, make things convenient for overall structure and overall arrangement design, avoid having the assembly angle and increase the degree of difficulty that structure closed design and assembly operation. Certainly, in practical applications, the relative position relationship (e.g., the relative angle) between the side plate 41 and the bottom plate 42 of the air duct partition plate 4 may be adjusted according to practical situations, so as to ensure that the first cavity and the second cavity are effectively isolated, and ensure the sealing performance of the first cavity.

Because be equipped with trompil 421 on the bottom plate 42 of wind channel baffle 4, and the shape and the size of trompil 421 and bus-bar capacitor 321 phase-match, consequently after the equipment is accomplished, bus-bar capacitor 321 on the drive plate 3 can pass trompil 421 and enter into the second cavity to can utilize the cooling air current that forms in the second cavity directly to carry out high-efficient heat dissipation to bus-bar capacitor 321 when improving the protective effect to drive plate 3 (first cavity), improve structural design's practicality.

As shown in fig. 5, the top of the side plate 41 of the duct partition 4 abuts against the wall plate 13 of the casing 1. Specifically, the wall plate 13 of the casing 1 abuts against the side plate 41, and a strip-shaped protruding plate 131 perpendicular to the wall plate 13 is provided, and when the air duct partition plate 4 is mounted to the casing 1, the side plate of the air duct partition plate 4 abuts against the strip-shaped protruding plate 131. Specifically, the side of the top of the side plate 41 of the air duct partition plate 4 facing away from the second cavity is attached to the side of the strip-shaped protruding plate 131 facing the second cavity. Simple structure is reliable, can seal the hookup location between the top of wind channel baffle 4 and the shell 1 simultaneously, avoids producing the leakproofness that assembly gap influences first cavity.

In addition, the bottom surface of the bottom plate 42 of the duct spacer 4 has a catching groove 43 perpendicular to the bottom plate 42, and the frame 2 has a catching plate 21 corresponding to the catching groove 43, and the catching plate 21 is fitted into the catching groove 43 when the duct spacer 4 is mounted to the casing 1. The connecting position between the bottom of the air duct partition plate 4 and the frame 2 is sealed in a clamping connection mode, so that the air duct partition plate 4 can be positioned and fixed, the sealing performance of the first cavity can be further improved, and the protection effect of the first cavity is better.

In order to further improve the practicability of the air duct partition plate 4, one end of the side plate 41 of the air duct partition plate 4 close to the second window 12 is arranged in a bent mode towards the second window 12, so that the air guide effect can be achieved, cooling air flow in the second cavity can smoothly flow to the second window 12 in an efficient mode, improvement of circulation flowing efficiency of the cooling air flow is facilitated, and the heat dissipation effect is improved.

Referring to fig. 6, an outlet 44 is formed on the side plate 41 of the air duct partition plate 4, and the components in the first cavity are electrically connected to the components in the second cavity through cables passing through the outlet 44. Specifically, the cover plate 14 is arranged at a position on the housing 1 corresponding to the outlet 44, and the outlet 44 can be sealed by the cover plate 14 after the cable of the outlet 44 is assembled, so that the sealing performance of the first cavity is ensured, and the high-protection design of the motor controller is realized.

Moreover, the outlet 44 is located at a side adjacent to the heat dissipation fan 31 and at a position where the wind field is weak, so as to avoid the blowing direction of the heat dissipation fan 31, thereby further improving the sealing property of the first cavity.

The upper surface of the bottom plate 42 of the air duct partition plate 4 has a plurality of ribs 422 respectively surrounding each opening 421, and the lower surface of the bottom plate 42 of the air duct partition plate 4 has a plurality of sleeves 423 respectively surrounding the openings 421, so that the connection stability of the air duct partition plate 4 and the bus capacitor 321 can be improved.

Particularly, the first window 11 is located on the bottom plate 42 of the housing 1, and the second window 12 is located on the top plate of the housing 1, so that the cooling air flow can dissipate heat in a downward-upward flowing manner, and the heat dissipation effect is effectively improved.

Specifically, the heat dissipation fan 31 is located inside the first window 11, and the plurality of high heat generating components 32 are located between the heat dissipation fan 31 and the second window 12, so as to ensure the heat dissipation effect on the plurality of high heat generating components 32, and to discharge heat efficiently from the second window 12 to the outside.

The edge of the driving board 3 has a plurality of power terminals, and the plurality of power terminals are exposed to the outside of the housing 1 through terminal holes on the housing 1, so as to be electrically connected with the outside. Moreover, in order to avoid the influence of a plurality of terminal holes on the housing 1 on the sealing performance of the first cavity, a silica gel sealing member 33 is arranged between the power terminal and the terminal hole, so that the high protection of the motor controller is realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A motor controller comprises a shell and a driving board arranged in the shell through a frame, wherein the driving board comprises a heat radiation fan and a plurality of high-heat-generation components, and is characterized in that the space in the shell is divided into a first closed cavity and a second cavity independent of the first cavity, and the second cavity is communicated with the outside through a first windowing window and a second windowing window on a wall plate of the shell; the heat dissipation fan and the high-heat-generation components are located in the second cavity, and cooling airflow which flows in from the first window and is exhausted from the second window is formed in the second cavity through the heat dissipation fan.

2. The motor controller of claim 1, wherein the motor controller comprises a duct partition; the second cavity is formed by enclosing the air duct partition plate, the wall plate of the shell and the frame.

3. The motor controller of claim 2, wherein the high heat generating components include bus capacitors and a heat sink for dissipating heat from the power module; the air duct partition plate comprises a side plate and a bottom plate which are perpendicular to each other, the side plate is perpendicular to the driving plate, and the bottom plate is parallel to the driving plate; the bottom plate is provided with an opening, and the bus capacitor penetrates through the opening to enter the second cavity.

4. The motor controller of claim 3, wherein the top of the side plate of the air duct partition abuts against the wall plate of the housing, the wall plate of the housing abutting against the side plate has a strip-shaped protruding plate perpendicular to the wall plate, and the side plate of the air duct partition abuts against the strip-shaped protruding plate when the air duct partition is mounted to the housing.

5. The motor controller of claim 3, wherein the bottom surface of the bottom plate of the duct spacer has a slot perpendicular to the bottom plate, the frame has a catch plate thereon corresponding to the slot, and the catch plate is inserted into the slot when the duct spacer is mounted to the housing.

6. The motor controller according to claim 3, wherein an outlet is formed in a side plate of the air duct partition plate, and the component in the first cavity is electrically connected with the component in the second cavity through a cable passing through the outlet; and a cover plate is arranged on the shell corresponding to the outlet.

7. The motor controller of claim 3, wherein the upper surface of the bottom plate of the air duct partition has a plurality of ribs disposed around each of the openings, and the lower surface of the bottom plate of the air duct partition has a plurality of sleeves disposed around the openings.

8. The motor controller of any of claims 1-7, wherein the first fenestration is located on a bottom panel of the housing and the second fenestration is located on a top panel of the housing.

9. The motor controller according to any one of claims 1 to 7, wherein the heat dissipation fan is located inside the first window, and the plurality of high heat generating components are located between the heat dissipation fan and the second window.

10. The motor controller according to any one of claims 1 to 7, wherein an edge of the driving board has a plurality of power terminals exposed to the outside of the housing through a terminal hole on the housing with a seal therebetween.